Effect of mineral admixtures on the mixed-mode (I/II) fracture characterization of cement mortar: CTS, CSTBD and SCB specimens

被引：52
作者：
Azar, Hadi Fathipour [1 ]
Choupani, Naghdali [2 ]
Afshin, Hassan [3 ]
Moghadam, Rasoul Hamidzadeh [1 ]
机构：
[1] Sahand Univ Technol, Min Engn Dept, Tabriz, Iran
[2] Sahand Univ Technol, Dept Mech Engn, Tabriz, Iran
[3] Sahand Univ Technol, Dept Civil Engn, Tabriz, Iran
来源：
ENGINEERING FRACTURE MECHANICS | 2015年 / 134卷
关键词：
Mixed-mode fracture; J-integral; Stress intensity factors (SIFs); Cement mortar (CM); Mineral admixtures; BRAZILIAN DISK TEST; SILICA FUME; FLY-ASH; CONCRETE; PERFORMANCE; TOUGHNESS; ROCK;
D O I：
10.1016/j.engfracmech.2014.12.008
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
Effects of adding Silica Fume (SF) and natural Zeolite (Ze) on the fracture characteristics of cement mortar (CM) were investigated using the CTS (Compact-Tension-Shear), Cracked Straight Through Brazilian Disc (CSTBD), and Semi Circular Bending (SCB) specimens. Experimental tests were performed on CM made by replacing 0%, 7.5% and 15% of cement with SF and Ze. The interaction J-integral method was used to separate the mixed-mode stress intensity factors (SIFs) at the crack tip under different loading modes. Critical SIFs and associated strain energy release rates (SERRs) were obtained. Formulations with SF showed better fracture characterization than Ze for the CM. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：20 / 34
页数：15
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